The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 12, 2016
Filed:
Nov. 14, 2011
Ryosuke Kanai, Kawasaki, JP;
Ryosuke Kanai, Kawasaki, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A detecting system for detecting a developer remainder in a developer container accommodating a developer to be used for developing an electrostatic latent image formed on an image bearing member. The detecting system includes first, second and third electrode members provided in the developer container, an AC voltage source for applying an AC voltage to the third electrode member, a first electrostatic capacity detector for detecting a first electrostatic capacity between the first electrode member and the third electrode member, and a second electrostatic capacity detector for detecting a second electrostatic capacity between the second electrode member and the third electrode member. In addition, a developer remainder detector corrects the first electrostatic capacity on the basis of the second electrostatic capacity and detects a developer remainder of the developer container from a result of correction of the first electrostatic capacity. The first electrostatic capacity is corrected on the basis of the second electrostatic capacity.